diff --git a/en/peripherals/machine.UART.md b/en/peripherals/machine.UART.md
index 48681b9fbfde53f4b7afbe8676535fc324be3720..eedc665d5d13b2a790ee95ebcb679ceac448a1bb 100644
--- a/en/peripherals/machine.UART.md
+++ b/en/peripherals/machine.UART.md
@@ -454,7 +454,7 @@ This class transmits data through the UART.
 </ul>
 </div>
 
-<div class="BC92">
+<div class="EG915N">
 <pre class="language-python"><code class="language-python">class machine.UART(UART.UARTn, baudrate, databits, parity, stopbits, flowctl)
 </code></pre>
 <p><strong>Parametric Description</strong></p>
diff --git a/zh/peripherals/machine.UART.md b/zh/peripherals/machine.UART.md
index 06f22e8fa14b2dc52c4852d241744edca879a5cd..5208ef0eabcdd758107ba70dee579e93d1950c7e 100644
--- a/zh/peripherals/machine.UART.md
+++ b/zh/peripherals/machine.UART.md
@@ -454,7 +454,7 @@
 </ul>
 </div>
 
-<div class="BC92">
+<div class="EG915N">
 <pre class="language-python"><code class="language-python">class machine.UART(UART.UARTn, baudrate, databits, parity, stopbits, flowctl)
 </code></pre>
 <p><strong>参数描述：</strong></p>